391448116 has 6 divisors (see below), whose sum is σ = 685034210. Its totient is φ = 195724056.

The previous prime is 391448111. The next prime is 391448131. The reversal of 391448116 is 611844193.

It can be written as a sum of positive squares in only one way, i.e., 331385616 + 60062500 = 18204^2 + 7750^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391448111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48931011 + ... + 48931018.

Almost surely, 2^391448116 is an apocalyptic number.

It is an amenable number.

391448116 is a deficient number, since it is larger than the sum of its proper divisors (293586094).

391448116 is a wasteful number, since it uses less digits than its factorization.

391448116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97862033 (or 97862031 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 391448116 is about 19785.0477886711. The cubic root of 391448116 is about 731.5175262309.

The spelling of 391448116 in words is "three hundred ninety-one million, four hundred forty-eight thousand, one hundred sixteen".